Struct Host

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pub struct Host<M> { /* private fields */ }
Expand description

A host, managing the lifecycle of several procs, and their backend routing, as described in this module’s documentation.

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impl<M: ProcManager> Host<M>

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pub async fn serve( manager: M, addr: ChannelAddr, ) -> Result<(Self, MailboxServerHandle), HostError>

Serve a host using the provided ProcManager, on the provided addr. On success, the host will multiplex messages for procs on the host on the address of the host.

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pub fn manager(&self) -> &M

The underlying proc manager.

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pub fn addr(&self) -> &ChannelAddr

The address which accepts messages destined for this host.

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pub fn system_proc(&self) -> &Proc

The system proc associated with this host.

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pub async fn spawn( &mut self, name: String, ) -> Result<(ProcId, ActorRef<ManagerAgent<M>>), HostError>

Spawn a new process with the given name. On success, the proc has been spawned, and is reachable through the returned, direct-addressed ProcId, which will be ProcId::Direct(self.addr(), name).

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impl<M: ProcManager + BulkTerminate> Host<M>

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pub async fn terminate_children( &self, timeout: Duration, max_in_flight: usize, ) -> TerminateSummary

Gracefully terminate all procs spawned by this host.

Delegates to the underlying manager’s BulkTerminate::terminate_all implementation. Use this to perform orderly teardown during scale-down or shutdown.

§Parameters
  • timeout: Per-child grace period before escalation.
  • max_in_flight: Upper bound on concurrent terminations.
§Returns

A TerminateSummary with counts of attempted/ok/failed terminations.

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impl<M: Debug> Debug for Host<M>

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<M> Freeze for Host<M>
where M: Freeze,

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impl<M> !RefUnwindSafe for Host<M>

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impl<M> Send for Host<M>
where M: Send,

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impl<M> Sync for Host<M>
where M: Sync,

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impl<M> Unpin for Host<M>
where M: Unpin,

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impl<M> !UnwindSafe for Host<M>

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> FutureExt for T

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fn with_context(self, otel_cx: Context) -> WithContext<Self>

Attaches the provided Context to this type, returning a WithContext wrapper. Read more
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fn with_current_context(self) -> WithContext<Self>

Attaches the current Context to this type, returning a WithContext wrapper. Read more
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impl<A, M> Handler<IndexedErasedUnbound<M>> for A
where A: Handler<M>, M: Castable,

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fn handle<'life0, 'life1, 'async_trait>( &'life0 mut self, cx: &'life1 Context<'_, A>, msg: IndexedErasedUnbound<M>, ) -> Pin<Box<dyn Future<Output = Result<(), Error>> + Send + 'async_trait>>
where 'life0: 'async_trait, 'life1: 'async_trait, A: 'async_trait,

Handle the next M-typed message.
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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> QuoteExt for T
where T: ?Sized,

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fn push_quoted<'q, Q, S>(&mut self, _q: Q, s: S)
where Q: QuoteInto<T>, S: Into<Quotable<'q>>,

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a [WithDispatch] wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a [WithDispatch] wrapper. Read more
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impl<M> Message for M
where M: Debug + Send + Sync + 'static,